p54: convert to sysdata API

The Coccinelle sysdata patches were used to help with
this transition. The changes have been carefully manually
vetted for. With the conversion the driver no longer is
in charge of free'ing the firmware data, and also does not
have to implement its own wait/completion calls.

Generated-by: Coccinelle SmPL
Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>